ARM: OMAP: omap3evm: cleanup revision bits

The omap3evm has its revision information bits inside the plat/board.h
file. Those bits are not used anywhere in the upstream tree besides the
board-omap3evm.c file.
Move the OMAP3EVM_BOARD_GEN_* bits to the board file and remove the
get_omap3_evm_rev() function declaration.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/board-omap3evm.c

@@ -74,6 +74,18 @@
 #define OMAP3EVM_GEN1_ETHR_GPIO_RST	64
 #define OMAP3EVM_GEN2_ETHR_GPIO_RST	7
 
+/*
+ * OMAP35x EVM revision
+ * Run time detection of EVM revision is done by reading Ethernet
+ * PHY ID -
+ *	GEN_1	= 0x01150000
+ *	GEN_2	= 0x92200000
+ */
+enum {
+	OMAP3EVM_BOARD_GEN_1 = 0,	/* EVM Rev between  A - D */
+	OMAP3EVM_BOARD_GEN_2,		/* EVM Rev >= Rev E */
+};
+
 static u8 omap3_evm_version;
 
 u8 get_omap3_evm_rev(void)